Jupiter and Shadow transit of Ganymede

 

Temperature dropped to -5°C when shadow transit of Ganymede started.

Setting: TAL200K @f/26 with ASI224MC
ADC and IR/UC Cut
Exposure tim 27ms and 30.000 frames of which 3000 stacked.
Software: SharpCap 4, AstroSurface and CS4

Jupiter Jan 9, 2025 with GRS

I reworked by image by applying derotation using Winjupos. All in all, no huge improvements.

Jupiter and GRS

This evening some clear skies with 2 inches of snow and 0,5°C. Time to capture Jupiter with Great Red Spot. 

Setting
TAL200K f/23 with ADC and Barlow x2

IR/OV Cut filter

ASI224MC

16bit, 127fps, 30.000 frames of which 3000 withhold

Software : SharpCap 4, AstroSurface V3 Volcano, CS4

Sol'Ex Pro-AM 2024 Results (SOLAP Project)

SOLAP Project Abstract : Systematic observations of the chromosphere and the photosphere started in Meudon Observatory 115 years ago with Deslandres spectroheliograph. An exceptional collection of more than 100 000 monochromatic images in CaII K and Hα spanning more than 10 solar cycles is proposed to the international community by the BASS2000 solar database. We started in 2023 a “PRO-AM” collaboration between professional and amateur astronomers with the Solar Explorer (SOLEX), a compact and high quality spectroheliograph designed by Christian Buil, in order to record images every day, and several times per day, owing to tens of observing stations in various places. 

I joined the PRO-AM community last summer (August '24) and submitted serveral images. All of them are visible in the BASS2000 database. https://bass2000.obspm.fr/home.php

The contribution of the amateur community compared with the professional Meudon group is plotted in below table (anno 2024)

Sun Halo

 

Sun this afternoon with a faint Sun Dog, Circumzenithal arc and Sun Pillar.

Moon-Venus Conjunction

My first observation of 2025 with a nice Moon-Venus conjuction.

Setting :

Nikon D7500 with 18-200mm lens set on 90mm

Bracketing and HDR combining using CS4. Final editing with DeNoise AI.

Happy New Year 2025

Happy Astronomical New Year 2025 with many many clear skies.